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Group of studies of pressure effects on magnetic properties

 

Head of group  Svechkarev I.V. e-mail:svechkarev@ilt.kharkov.ua

Doctors of Sciences,  Professor

Experimental equipment allows to study:

• The temperature dependence of the magnetic susceptibility in the range 4,2 – 300 K in magnetic field up to 1 T by a Faraday method with a sensitivity of about 10^-9 emu. 

A range of the measured values of susceptibility is about (1–1000)х10^-6 emu/g and the accuracy is not worse then 0,2 %.
 
• The effect of helium gas pressure up to 2 kbar on the magnetic susceptibility in the temperature range 20,3 – 300 K by a levitation method based on the principle of a free suspension of the sample in strong and non-uniform magnetic field. The relative errors are about 0,03 %. 
• Another device for the pressure effect study is a pendulum type magnetometer placed directly into the pressure cell, which has the similar technical characteristics. 

SQUID magnetometer  for magnetization and magnetic susceptibility measurements that operates at temperatures 4.2 – 300 K, fields 0 –  5 T.

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Head of group Pluzhnikov V.B. e-mail:pluzhnikov@ilt.kharkov.ua

Candidates of Sciences (Ph.D.),  Senior researcher.

Low frequency differential magnetometer that operates at temperatures 0.5 – 4.2 K, in fields up to 9 T.

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Group of theoretical studies of electronic structure and magnetic properties

Head of group Grechnev G.E. e-mail: grechnev@ilt.kharkov.ua

Doctors of Sciences,  Senior researcher

Theoretical methods:

• We use modern methods of computational and theoretical solid state physics for ab initio calculations of band structures within Density Functional Theory, including linearized muffin-tin method in atomic sphere approximation LMTO-ASA, and a full potential FP-LMTO method.
• Also the augmented spherical wave method (ASW) and ab initio pseudopotentials were employed.
• LMTO-ASA and FP-LMTO are modified to take into account the effect of external magnetic fields in the framework of ab initio DFT calculations.

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Principal research group of Academician V. V. Eremenko

Studies of structures and magnetoelastic properties of low-dimensional systems in the region of low temperature phase transitions 

Head of group Sirenko V.A. e-mail:sirenko@ilt.kharkov.ua

Doctors of Sciences,  Professor.

X-rays diffractometer DN-2, equipped with a low temperature chamber compatible with originally designed cryostats, and intended for measurements in stationary magnetic fields up to 5 T at 10 – 300 K.

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